KR20130013240A - Anti sloshing apparatus - Google Patents

Abstract

PURPOSE: An anti-sloshing device is provided to minimize the damage to buoyancy units and the inner wall of a liquid cargo storage tank, which is caused when the buoyancy units bump into the inner wall of the liquid cargo storage tank. CONSTITUTION: An anti-sloshing device comprises a first buoyancy block part(11), a second buoyancy block part(13), and connection units. The first buoyancy block part is placed on liquid cargo stored in the liquid cargo storage tank in order to cover a part of the liquid cargo, and comprises first buoyancy blocks. The second buoyancy block part is placed around the first buoyancy block part, and comprises second buoyancy blocks. The connection units connect the first and second buoyancy blocks close to each other.

Description

[0001] ANTI SLOSHING APPARATUS [0002]

The present invention relates to a sloshing suppression apparatus.

In general, various types of ships are being manufactured to transport liquid cargo by sea. For example, in order to transfer liquid cargoes such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), and crude oil (crude oil), hulls are manufactured according to the characteristics of each cargo. Special types of liquid cargo storage tanks have been applied to keep them sealed and warm.

One of the major loading conditions in the manufacture of such hull and liquid cargo storage tanks is the sloshing problem. Sloshing is a liquid cargo having a free surface because the liquid cargo receives kinetic energy continuously due to the movement of the hull. As referring to the behavior of fluids that shake sharply and cause a strong impact on the inner wall of the storage space (ie liquid cargo storage tank), such sloshing is considered from the beginning of the construction of the hull and liquid cargo storage tanks.

As such, the shape of the hull and the liquid cargo storage tank has been designed to minimize the sloshing caused by the liquid cargo and at the same time to withstand the expected sloshing load. In order to avoid the sloshing load, Shipowners had to accept conditional service conditions with limited cargo load. Nonetheless, due to the uncertainty of the sloshing load, various problems with the damage of unexpected liquid cargo storage tanks continue to arise.

This problem of sloshing has to be solved equally in fuel tanks of space, aviation, and automobile fields as well as in ships. Unlike ships, in the case of spacecraft or aircraft, the fuel tank is caused by a sudden start Rather than merely reinforcing the structure of the fuel tank due to the sudden fluid behavior, it is more important to smooth the supply of the fuel. Therefore, the sloshing problem in the direction of controlling the flow of the liquid cargo- .

In order to solve such a sloshing problem, the applicant of the present invention has proposed in Korean Patent No. 1043622 (Prior Art 1) a plurality of buoyant bodies having buoyancy to float on the surface of liquid, an open cell ) Structure and includes a foam member surrounding the buoyancy member and connecting means for connecting the adjacent buoyancy members to each other.

At this time, in the sloshing suppressing device disclosed in the prior document 1, an example in which a buoyancy unit including a foam member surrounding a buoyancy body is formed in a cube shape is presented.

At this time, the sloshing suppressing device disclosed in the above-mentioned document 1 is configured to suppress the sloshing due to the flow of the liquid cargo while the liquid cargo moves together with the movement in the suspended state on or near the surface of the liquid cargo. As a result, the buoyancy unit located at the periphery of the sloshing suppressor is hit against the inner side wall or the top wall of the liquid cargo storage tank.

As such, when the buoyancy unit located at the periphery of the sloshing suppressing device collides with the side wall or the top wall of the liquid cargo storage tank, a problem occurs that the cover and the foam member surrounding the surface of the buoyancy unit are damaged. In addition, if the buoyancy unit located at the periphery of the sloshing suppressing device collides with the side wall or the top wall inside the liquid cargo storage tank, the liquid cargo storage tank inner wall may be damaged.

Prior Art 1: Korean Patent No. 1043622

One embodiment of the present invention is to provide a sloshing suppression device that can prevent the buoyancy unit of the sloshing suppression device from colliding with the wall surface inside the liquid cargo storage tank to damage the inner wall of the buoyancy unit and the liquid cargo storage tank.

One embodiment of the present invention is to provide a sloshing suppressing device that is easy to assemble and manage the buoyancy unit constituting the sloshing suppressing device.

According to one aspect of the invention, a first buoyancy force comprising a first buoyancy block disposed on the liquid cargo to cover a portion of the surface of the liquid cargo stored in the liquid cargo storage tank, the first buoyancy block having a convex protruding upper surface. Block portion; A plurality of second buoyancy blocks disposed around the first buoyancy block part disposed on the liquid cargo in a plurality, and having one side and an upper surface facing the inner wall of the liquid cargo storage tank convexly protrudingly formed. A sloshing suppression apparatus is provided that includes a second buoyancy block portion and connecting means for interconnecting buoyant blocks adjacent to each other among the plurality of first buoyancy blocks and the plurality of second buoyancy blocks.

At this time, the first buoyancy block portion may be formed in a rectangular shape as a whole.

In this case, a plurality of second buoyancy block parts may be formed, and a plurality of second buoyancy blocks of each of the plurality of second buoyancy block parts may be arranged in a line around the first buoyancy block part.

At this time, an edge portion of the sloshing suppression device is positioned between the plurality of second buoyancy block portions, and a third buoyancy block portion of the second buoyancy block portion adjacent to the edge portion is connected by the connecting means. The buoyancy block is installed, the third buoyancy block may be formed convexly protruding two side and the upper surface facing the inner wall of the liquid cargo storage tank.

At this time, each of the first to third buoyancy blocks, buoyancy body having a buoyancy to be suspended on the surface of the liquid; It may include a foam member surrounding the buoyancy body and absorbing the liquid and a cover surrounding the foam member.

In this case, the covers of each of the first to third buoyancy blocks may be formed to have different colors.

At this time, each of the first to third buoyancy blocks may be formed of a cube.

On the other hand, the connecting means includes a connecting belt installed on each of the first to third buoyancy blocks to cross the surface of each of the first to third buoyancy blocks; And a fastening member connecting the connection belts of the first to third buoyancy blocks and the connection belts of the buoyancy blocks adjacent to the first to third buoyancy blocks.

At this time, both ends of the connecting belt may be formed with a connecting ring.

At this time, the connecting ring may be located at the corners of the first to third buoyancy blocks.

At this time, the connecting belt is made of a pair, the pair of connecting belt may be arranged to cross.

At this time, a cover member may be installed on an upper portion of the pair of connecting belts in which the pair of connecting belts intersect.

At this time, the connection belt may be installed on the upper and lower surfaces of the first to third buoyancy blocks.

In the sloshing suppressing device according to an embodiment of the present invention, the buoyancy unit has a convex surface that faces the side wall or the upper wall of the liquid cargo storage tank so that the area in contact with the side wall or the top wall of the liquid cargo storage tank is Due to the small size, the buoyancy unit can collide with the wall inside the liquid cargo storage tank, thereby minimizing damage to the inner walls of the buoyancy unit and the liquid cargo storage tank.

The sloshing suppressing device according to an embodiment of the present invention is easy to manage and install the buoyancy unit by changing the color and shape of the buoyancy unit according to the position of the buoyancy unit.

1 is a cross-sectional view illustrating a sloshing suppression device according to an embodiment of the present invention installed in a liquid cargo storage tank.
FIG. 2 is a plan view showing a state where a sloshing suppression device according to an embodiment of the present invention is installed in a liquid cargo storage tank. FIG.
3 is a view showing the arrangement of the first buoyancy block portion, the second buoyancy block portion and the third buoyancy block of the sloshing suppression apparatus according to an embodiment of the present invention.
4A is a perspective view of a first buoyancy block and a connecting belt constituting a sloshing suppressing device according to an embodiment of the present invention.
4B is a partially cutaway perspective view of the first buoyancy block of FIG. 4A.
5 is a perspective view illustrating a state in which a cover member is installed on a connecting belt.
6A is a perspective view of a second buoyancy block and a connecting belt constituting a sloshing suppressing device according to an embodiment of the present invention.
6B is a cross-sectional view of the second buoyancy block of FIG. 6A, and FIG. 6C is a plan view of the second buoyancy block of FIG. 6A.
7A is a perspective view of a third buoyancy block and a connecting belt constituting a sloshing suppressing device according to an embodiment of the present invention.
7B is a cross-sectional view of the third buoyancy block of FIG. 7A, and FIG. 7C is a plan view of the third buoyancy block of FIG. 7A.
8 is a view showing a state in which the fastening member is connected to the two buoyancy units.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a cross-sectional view illustrating a sloshing suppression device according to an embodiment of the present invention installed in a liquid cargo storage tank. FIG. 2 is a plan view showing a state where a sloshing suppression device according to an embodiment of the present invention is installed in a liquid cargo storage tank. FIG. 3 is a view showing the arrangement of the first buoyancy block portion, the second buoyancy block portion and the third buoyancy block of the sloshing suppression apparatus according to an embodiment of the present invention.

 The sloshing suppression apparatus 10 according to the present embodiment, as shown in FIGS. 1 to 3, is provided with a buoyancy block 100 arranged in plural on the liquid cargo 2 stored in the liquid cargo storage tank 1. And connecting means for connecting the same.

Each of the plurality of buoyancy blocks 100 may be formed in a hexahedral shape. At this time, the plurality of buoyancy blocks 100 are arranged side by side in the first direction (lateral direction) and the second direction (vertical direction) perpendicular to the first direction as viewed in FIG. ) May have a rectangular shape to cover the surface of the liquid cargo stored in the liquid cargo storage tank 1.

At this time, the sloshing suppressing apparatus 10 is configured such that the sloshing suppressing apparatus 10 and the plurality of piping 4 and the like for transporting the liquid, for example, the LNG, which can be stored in the liquid cargo storage tank 1, Or the buoyancy block may not be installed in some areas so as not to hit the edge of the liquid storage tank 1 or the like.

According to an embodiment of the present disclosure, the plurality of buoyancy blocks 100 may include a first buoyancy block 110, a second buoyancy block 130, and a third buoyancy block 150.

At this time, the first buoyancy block 110, the second buoyancy block 130 and the third buoyancy block 150 may be made of different shapes and colors. Thus, when the first buoyancy block 110, the second buoyancy block 130 and the third buoyancy block 150 constituting the sloshing suppression device is formed by different shapes and colors, hundreds of buoyancy blocks The buoyancy block of each of the sloshing suppression device 10 that can be made by combining the, it is convenient to be able to manage and assemble by distinguishing for each position of the buoyancy block.

More specifically, referring to FIGS. 2 and 3, the first buoyancy block 110 is located in the center of the sloshing suppression apparatus 10 so that the upper surface thereof faces the upper side of the liquid cargo storage tank 1. .

In the present specification, an aggregate of the first buoyancy blocks 110, in which the first buoyancy blocks 110 are interconnected to form part of the sloshing suppression apparatus 10, may be referred to as a first buoyancy block portion (11 in FIG. 3). Can be. At this time, in the present embodiment, the center portion in which the first buoyancy block 110 is located is not a local region that is locally defined at the center of the sloshing suppressing device, but as shown in FIGS. 2 and 3. It is to be understood as including the inner region of the sloshing suppressing device 10 in which the first buoyancy block 110 can be installed except for the periphery of the suppressing device 10. The detailed structure of the 1st buoyancy block 110 which forms the 1st buoyancy block part 11 is mentioned later.

On the other hand, the second buoyancy block 130 is installed at the corner of the sloshing suppression device 10 of the rectangular shape of the sloshing suppression device 10, that is, the circumference except the corner portion, the upper surface is stored liquid cargo It is formed to face the upper side of the tank 1 and one side to face the inner wall of the liquid cargo storage tank. At this time, in the present specification, the aggregate of the second buoyancy blocks 130, in which the second buoyancy blocks 130 are interconnected to form a part of the sloshing suppression apparatus 10, is the second buoyancy block portion (13 in FIG. 3). It is called.

According to an embodiment of the present invention, as can be seen in Figure 3, the second buoyancy block portion 13 is formed to be in contact with one side of the first buoyancy block portion 11, a plurality of second buoyancy block 130 may be formed in a form connected to the date.

On the other hand, in one embodiment of the present invention, the first buoyancy block 110 or the second in the circumferential portion of the sloshing suppression apparatus 10 surrounding the area (A) formed in the shape so that the buoyancy block is not located The buoyancy block 130 may be located. In this embodiment, the second buoyancy block is formed such that the circumference portion is located. The detailed structure of the 2nd buoyancy block 130 which forms the 2nd buoyancy block part 13 is mentioned later.

The third buoyancy block 150 is located at the corner of the periphery of the sloshing suppression device 10 so that the upper surface is formed to face the upper side of the liquid cargo storage tank 1, and two adjacent sides are liquid It is formed to face two neighboring inner walls of the cargo storage tank 1.

As shown in FIG. 3, the third buoyancy block 150 may be located at a corner portion at which the second buoyancy block portions 13 arranged in a straight line cross each other. The detailed configuration of the third buoyancy block 150 will be described later.

On the other hand, according to an embodiment of the present invention, the connecting means for connecting the first to third buoyancy blocks with each other is a connecting belt (122 of FIG. 4A, 142 of FIG. 6, formed on the surface of the first to third buoyancy blocks) 7A and 162 of FIG. 7A and the connecting ring (124 of FIG. 4A, 144 of FIG. 6, and 164 of FIG. 7A) of the connecting belts 122, 142, and 162. .

In the present embodiment, the first to third buoyancy blocks 110, 130, and 150 are interconnected using the connecting belts 122, 142, 162 and the fastening member 170, but other known connecting means, for example, It will also be possible to interconnect the first to third buoyancy blocks 110, 130, 150 using coupling means such as Velcro tapes, zippers, and the like. That is, the connection means may use a known technique, but is not limited thereto.

According to one embodiment of the invention, the first buoyancy block 110, the second buoyancy block 130 and the third buoyancy block 150 is located at a specific position of the sloshing suppression device as described above to suppress the sloshing When the device 10 suppresses sloshing of the liquid cargo 2 in a floating state inside the liquid cargo storage tank 1, the area where the sloshing suppressing device 10 collides with the inner wall of the liquid cargo storage tank 1. It is made in a form that can reduce, thereby preventing damage to the sloshing suppression apparatus 10.

Hereinafter, respective configurations of the first buoyancy block 110, the second buoyancy block 130, and the third buoyancy block 150 will be described in more detail with different drawings.

4A is a perspective view of a first buoyancy block 110 and a connecting belt 122 constituting a sloshing suppressing device according to an embodiment of the present invention. 4B is a partially cutaway perspective view of the first buoyancy block 110 of FIG. 4A.

The first buoyancy block 110 has a buoyancy to float on the liquid cargo (2) stored in the liquid cargo storage tank 1, more specifically, as shown in Figure 4b, buoyancy for floating in the liquid cargo It may be made of a buoyancy body 112, a foam member 114 surrounding the buoyancy body 112, and a cover 116 surrounding the foam member 114.

As shown in FIGS. 4A and 4B, the first buoyancy block 110 may have a cube or cuboid shape having a length of 1.0 to 1.5 m in width, length, and height, and the inside of the liquid cargo storage tank 1. Depending on the size of the space may vary in size or shape.

At this time, the first buoyancy block 110 according to an embodiment of the present invention, as shown in Figure 4b is provided with an upward protrusion 117 protruding convex upward in the upper portion.

In this case, the upward protrusion 117 of the first buoyancy block 110 may be formed by the form of the foam member 114 protruding upward.

As such, the first buoyancy block 110 has an upward protrusion 117 on the upper side thereof, so that the sloshing suppression device 10 including the first buoyancy block 110 floats on the liquid cargo 2. Even if the cargo 2 flows and the sloshing suppressing device 10 hits the upper side of the liquid cargo storage tank 1, the upper end of the upward protrusion 117 is first hit, so that the upward protrusion 117 is provided. If not, that is, compared with the case where the upper surface of the first buoyancy block 110 is a flat surface, the area where the first buoyancy block 110 hits the upper surface of the liquid cargo storage tank 1 can be formed small. . As such, the area in which the first buoyancy block 110 collides with the upper surface of the liquid cargo storage tank 1 is formed to be small, thereby reducing the risk of damage to the upper surface of the first buoyancy block 110 as a whole and storing the liquid cargo. Even in the case of the upper wall of the tank 1, the area in contact with the first buoyancy block 110 is reduced, so that the upper wall of the liquid cargo storage tank 1 is damaged due to a collision with the sloshing suppressor 10 Can be reduced.

As shown in FIG. 4B, the buoyancy body 112 may have a spherical shape or may be formed of an ellipsoid or various other structures, although not shown.

The buoyancy body 112 may have a buoyancy force to be suspended in the liquid cargo (2), and when the liquid cargo (2) is LNG, the airtight space is filled in such a way that the gas that is not converted to liquid can be filled therein even at cryogenic temperatures. It can be made of a hollow structure.

The buoyant body 112 may be made of a material having such a strength that the shape is not changed by the buoyant force. In order to sufficiently perform its function even in the cryogenic temperature state by the liquid cargo 2 such as LNG, Alloy.

The buoyant body 112 may have buoyancy due to such structural characteristics, but the structure of the buoyant body is not limited thereto. In addition, due to the characteristics of the material, for example, the shape of the closed cell And may have buoyancy.

As the buoyancy body 112 is made of the foam material of the closed cell as described above, even if cracks are generated on the surface of the buoyancy body 112 by thermal load, compression load, or the like, the liquid cargo is stored in the buoyancy body 112. (2) can not seep. Therefore, the buoyancy body 112 can maintain the buoyancy stably.

For example, the buoyancy body 112 may be formed of a polymer material including any one of phenol resins, melamine resins, and synthetic resins thereof so that liquid cargoes such as LNG maintain elasticity even at cryogenic temperatures maintaining liquid phase. .

On the other hand, the foam member 114, as shown in Figure 4b, surrounds the outer surface of the buoyancy body 112, the overall shape may be made of a rectangular parallelepiped.

In this case, the foam member 114 may have an open cell structure to more effectively prevent the liquid cargo 2 from seeping into sloshing. Here, the open cell structure has a structure in which a hole penetrating the inside and the outside of the foam member 114 is formed on the outer circumferential surface, so that the surface area of the foam member 114 can be maximized, . ≪ / RTI >

The foam member 114 is formed in an open cell structure and the liquid cargo 2 is impregnated into the foam member 114 so that the buoyancy block 100 floats in a state that a portion of the surface of the liquid cargo 2 is locked, So that the sloping by the liquid cargo 2 in the liquid cargo storage tank 1 can be more effectively suppressed.

The foam member 114 may be made of a polymer material, for example, a phenolic resin capable of absorbing the liquid cargo 2 even at cryogenic temperatures in which the liquid cargo 2 such as LNG maintains a liquid state and maintaining elasticity. It may be formed of a polymer material containing any one of a melamine resin and a synthetic resin thereof.

The cover 116 surrounds the foam member 114, as shown in FIG. 4B, thereby preventing the foam member 114 from breaking, and because of the debris of some damaged foam member 114. 2) can also prevent contamination.

Cover 116 may be made of a material that can have the same durability at room temperature, even at cryogenic temperatures, for example, may be made of polyacrylates (polyacrilate) fibers and the like.

The connection belt 122 may be installed on the surface of the first buoyancy block 110 to cross the surface of the first buoyancy block 110, as shown in FIG. 4A. More specifically, the connection belt 122 may be installed on the upper and lower surfaces of the first buoyancy block 110, respectively, as shown in Figure 4a, the upper and lower surfaces of the first buoyancy block 110 Can be installed to pass through the center of the.

The connecting belt 122 is not simply installed at the end of the first buoyancy block 110 or at the local area of the first buoyancy block 110, but as described above across the surface of the first buoyancy block 110. When installed, the interface between the connection belt 122 and the first buoyancy block 110 by the flow of the first buoyancy block 110 is maximized by maximizing the engagement area between the first buoyancy block 110 and the connection belt 122. The load acting on can be evenly distributed on the surface of the first buoyancy block 110, and as a result, the structural stability of the sloshing suppression apparatus 10 can be significantly improved.

The connecting belt 122 is made of the same material as the cover 116 of the first buoyancy block 110, it may be installed on the cover 116 of the first buoyancy block 110 by a method such as sewing, In addition, it may be installed on the surface of the first buoyancy block 110 using an adhesive or the like.

In this case, the connecting belt 122 may be arranged in a pair such that a pair of connecting belts cross each other, as shown in FIG. 4A, and such crossed pairs of connecting belts are shown in FIG. 4A, It may be installed on the upper and lower surfaces of the first buoyancy block 110, respectively.

As the connection belt 122 is installed in this way, a plurality of first buoyancy blocks arranged in a lattice structure as shown in FIG. 2 may be effectively connected in the transverse direction and the longitudinal direction.

In addition, the connection belt 122 may be formed of a pair of unit belts, as shown in Figure 4a, these unit belts may be arranged parallel to each other, and may be installed to be spaced apart from each other by a predetermined interval.

In this way, the pair of unit belts are spaced apart from each other to provide a space, so that the fastening member 170 for fastening the connecting belt 122 can be more easily coupled. This will be described more specifically in the following description of the fastening member.

On the other hand, both ends of the connecting belt 122, as shown in Figure 4a, the connecting ring 124 may be formed. At this time, the connection ring 124 can be formed by connecting a part of the connection belt 122 with another part in a state in which the connection belt 122 is curved such that a part of the connection belt 122 faces another part.

In other words, by connecting part and other parts of the connection belt 122 in a state in which the connection belt 122 is overlapped so that a part of the connection belt 122 faces another part, by sewing or the like to each other, A connecting ring 124 may be formed at the end of the belt 122.

In this case, in an embodiment of the present invention, the unit body to which the buoyancy block 100 and the connection belt 122 are coupled may be referred to as a buoyancy unit. For example, the unit in which the first buoyancy block 110 and the connection belt 122 are coupled may be referred to as a first buoyancy unit. Such buoyancy units may be connected to each other by a fastening member. Accordingly, the sloshing suppression apparatus according to an embodiment of the present invention is formed by connecting the first buoyancy unit to the third buoyancy unit in a lattice form by the fastening member. It can be understood that.

On the other hand, in one embodiment of the present invention, as shown in Figure 5, the cover member (on the upper side of the connecting belt 122 on the convexly protruding upward protrusion 117 of the first buoyancy block 110) ( 180 may be installed.

The cover member 180 may be located at the center of the upper surface where the pair of connecting belts 122 cross each other.

In this case, the cover member 180 may be formed in a square shape, as shown in FIG. 5, but is not limited thereto. The cover member 180 may be formed of the same material as the cover 116.

Such a cover member 180 is installed in the same way as sewn on the cover 116 surface of the first buoyancy block 110 on the upper surface of the first buoyancy block 110, so that the liquid cargo while the first buoyancy block is used The cover 116 of the first buoyancy block 110 is prevented from being damaged by friction with the upper surface of the storage tank 1.

At this time, the cover member 180 may be formed to be easily replaceable. In this case, when the upper surface of the first buoyancy block 110, that is, the portion covered by the cover member 180 is damaged, the first buoyancy block 110 may be repaired by replacing only the cover member 180. When the upper surface of the first buoyancy block 110 is damaged, the difficulty of replacing the entire first buoyancy block 110 or the entire cover may be prevented.

6A is a perspective view of a second buoyancy block 130 and a connecting belt 142 constituting a sloshing suppressing device according to an embodiment of the present invention. 6B is a cross-sectional view taken along line AA ′ of the second buoyancy block of FIG. 6A, and FIG. 6C is a plan view of the second buoyancy block of FIG. 6A.

6A through 6C, the second buoyancy block 130 includes a buoyancy body 132, a foam member 134, and a cover 136 similar to the first buoyancy block 110.

In addition, the connection belt 142 is installed on the upper and lower surfaces of the second buoyancy block 130.

Since the configuration of the buoyancy body 132 and the cover 136 and the connecting belt 142 forming the second buoyancy block 130 may be formed similarly to the first buoyancy block 110, a detailed description thereof will be described. Omit it.

Compared with the first buoyancy block 110, the second buoyancy block 130 has an upper protrusion 137 having a convex protrusion on the upper side of the second buoyancy block 130 and a first convex protrusion on the one side. A lateral protrusion 138.

As can be seen in FIG. 2, since the second buoyancy block 130 is located at the circumference of the first buoyancy block portion 11, an upper side thereof faces the upper wall of the liquid storage tank, and one side thereof is a liquid storage tank. It is formed to face the inner wall of the. Accordingly, the second buoyancy block 130 has an upward protrusion 137 on the upper side, and a first lateral protrusion 138 on one side. Thus, when the sloshing suppressor 10 moves inside the liquid cargo storage tank 1, the area where the upper side and one side of the second buoyancy block 130 collide with the inner wall of the liquid cargo storage tank 1 is higher than that. Localized to the central portions of the directional protrusion 137 and the first lateral protrusion 138. Accordingly, the area of the second buoyancy block 130 and the inner wall of the liquid cargo storage tank 1 is reduced.

At this time, the cover member 180 is installed on the upward protrusion 137 and the first lateral protrusion 138 of the second buoyancy block 130, as described in the first buoyancy block 110, thereby providing the second buoyancy block. When the upper surface and one side central portion of the 130 are damaged, only the cover member 180 may be replaced so that the surface of the second buoyancy block 130 may be easily maintained and repaired.

On the other hand, the connecting belt 142 installed on the second buoyancy block 130 may not be formed with a connecting ring 144 on the side of the corner portion adjacent to the first lateral protrusion. This is because the surface on which the first lateral protrusion 138 of the second buoyancy block 130 protrudes is formed to face the inner wall of the liquid cargo storage tank, so that other buoyancy blocks do not need to be coupled.

7A is a perspective view of a third buoyancy block and a connecting belt constituting a sloshing suppressing device according to an embodiment of the present invention. FIG. 7B is a cross-sectional view taken along line BB ′ of the third buoyancy block of FIG. 7A, and FIG. 7C is a plan view of the third buoyancy block of FIG. 7A.

7A to 7C, the third buoyancy block 150 may have a buoyancy body 152, a foam member 154, and a cover 156 similar to the first buoyancy block 110 and the second buoyancy block 130. ). In addition, the connection belt 162 is installed on the upper and lower surfaces of the third buoyancy block 150. The buoyancy body 152 and the cover 156, which form the third buoyancy block 150, and the connection belt 162 may be formed similarly to the first buoyancy block 110 and the second buoyancy block 130. Configuration that can be omitted so that the detailed description thereof.

When compared to the first buoyancy block 110 and the second buoyancy block 130, the third buoyancy block 150, the upper projection 157, the convex protrusion of the upper side of the third buoyancy block 150 and each other Two neighboring sides have a first lateral protrusion 158 and a second lateral protrusion 159 that protrude convexly.

As can be seen in FIG. 2, the third buoyancy block 150 is located between the two second buoyancy block portions 13 and at the corners of the circumference of the first buoyancy block portion 11, so that the upper surface is It faces the upper side of the liquid cargo storage tank 1, and two sides are formed to face two adjacent inner walls of the liquid cargo storage tank 1. Accordingly, the third buoyancy block 150 has an upward protrusion 157 on the upper side, and the first and second lateral protrusions 158 and 159 on the two adjacent sides, thereby preventing sloshing. The area where the upper side and two sides of the third buoyancy block 150 hit the inner wall of the liquid cargo storage tank 1 when 10 flows inside the liquid cargo storage tank 1 is the upward protrusion 157. To reduce the area of contact between the third buoyancy block 150 and the inner wall of the liquid cargo storage tank 1 is limited to the central portion of the first and second lateral protrusions 158, 159.

At this time, the cover member 180 is also installed on the first and second lateral protrusions 158 and 159 of the upward protrusion 157 of the third buoyancy block 150 so that the upper surface of the third buoyancy block 150 and By replacing only the cover member 180 when both side center portions are damaged, it is possible to easily maintain and repair the damage of the surface of the third buoyancy block.

In addition, the connecting belt 162 installed in the third buoyancy block 150 may not have the connecting ring 164 formed at the edge portion adjacent to the first and second lateral protrusions 158 and 159. The surface on which the first and second lateral protrusions 158, 159 of the third buoyancy block 150 protrude is formed to face the inner wall of the liquid cargo storage tank 1, so that other buoyancy blocks need to be joined. Because there is no.

8 is a view illustrating a state in which a fastening member connects the connection belts on two buoyancy blocks.

As shown in FIG. 8, the fastening member 170 includes two adjacent pairs of connecting rings such that two buoyancy blocks, for example, the adjacent first buoyancy block 110 and the second buoyancy block 130 are connected to each other. 124 and 144 may be connected to each other. As illustrated in FIG. 8, the fastening member 170 may include a pair of unit fastening members 172 disposed to be symmetrical to each other.

At this time, the fastening member 170, as shown in Figure 8, a pair of unit fastening member 172 having a curved shape so that both ends can be inserted into the adjacent pair of connecting rings (124, 144), respectively. The pair of unit fastening members 172 may be disposed so that both ends thereof face each other to be fastened to each other by a connection member 174 such as a bolt.

More specifically, as shown in FIG. 8, the pair of unit fastening members 172 may have a 'U' shape, and both ends of the pair of unit fastening members 172 may be adjacent pairs of connecting rings. 124 and 144 may be inserted from top to bottom and bottom to top, respectively, with reference to FIG. 8. At this time, Figure 8 is a plan view viewed from the top it is actually revealed that the insertion of the pair of unit fastening member 172 may not be made from the top to the bottom, or from the bottom to the top.

Both ends of the pair of fastening members 172 inserted in the adjacent pair of rings 124 and 144, respectively, will be located on the spaced space between the pair of connecting belts, as shown in FIG. The pair of fastening members 172 may be easily fastened in this space by a connection member 174 such as a bolt.

Meanwhile, in one embodiment of the present invention, a pair of U-shaped unit fastening members is illustrated as a fastening member for interconnecting the first to third buoyancy blocks, but the fastening member is not limited thereto, for example, as a fastening member. It may be possible to interconnect the buoyancy block 100 by using a ring-shaped connecting member formed in the form of a key ring or a fastening member generally formed in a square shape or using a connecting member made of the same material as the belt.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1 Liquid Cargo Storage Tanks 2 Liquid Cargo
10 sloshing suppressor 100 buoyancy block
110 First buoyancy block 112 Buoyancy body
114 Foam member 116 Cover
117 Upward protrusion 122 Connecting belt
124 Hook 130 Second Buoyancy Block
132 Buoyancy Body 134 Foam Member
136 Cover 137 Upward protrusion
138 First lateral protrusion 142 Connecting belt
144 Link 150 Third Buoyancy Block
152 Buoyancy Body 154 Foam Member
156 Cover 157 Upward protrusion
158 first lateral protrusions 159 second lateral protrusions
162 link belt 164 link
170 Fastening Member 172 Unit Fastening Member
174 Connecting member 180 Cover member

Claims (13)

A first buoyancy block portion disposed on the liquid cargo so as to cover a portion of the surface of the liquid cargo stored in the liquid cargo storage tank, the first buoyancy block portion including a first buoyancy block protrudingly formed on an upper surface thereof;
A plurality of second buoyancy blocks disposed around the first buoyancy block part disposed on the liquid cargo in a plurality, and having one side and an upper surface facing the inner wall of the liquid cargo storage tank convexly protrudingly formed. Second buoyancy block portion and
Connecting means for interconnecting buoyancy blocks adjacent to each other among the plurality of first buoyancy blocks and the plurality of second buoyancy blocks
Sloshing suppression apparatus comprising a.
The method of claim 1,
The sloshing suppression apparatus of which the said 1st buoyancy block part consists of a rectangular shape as a whole.
The method of claim 2,
The second buoyancy block portion is formed of a plurality,
And a plurality of second buoyancy blocks of each of the plurality of second buoyancy block portions are arranged in a line around the first buoyancy block portion.
The method of claim 3, wherein
An edge portion of the sloshing suppressing device is positioned between the plurality of second buoyancy block portions,
The corner portion is provided with a third buoyancy block connected by the second buoyancy block of the neighboring second buoyancy block portion and the connecting means,
And the third buoyancy block is convexly protruding from both side and top surfaces facing the inner wall of the liquid cargo storage tank.
The method of claim 4, wherein
Each of the first to third buoyancy blocks,
A buoyancy body having buoyancy force to float on the surface of the liquid;
A foam member surrounding the buoyancy body and capable of absorbing the liquid;
And a cover surrounding the foam member.
The method of claim 5, wherein
Each of the first to third buoyancy blocks,
A sloshing suppression device, formed to have covers of different colors.
7. The method according to any one of claims 4 to 6,
And each of the first to third buoyancy blocks is formed of a cube.
7. The method according to any one of claims 4 to 6,
The connecting means
A connection belt installed on each of the first to third buoyancy blocks to cross a surface of each of the first to third buoyancy blocks; And
And a fastening member connecting the connection belts of the first to third buoyancy blocks and the connection belts of the buoyancy blocks neighboring to the first to third buoyancy blocks.
The method of claim 8,
A sloshing inhibiting device, wherein both ends of the connecting belt are formed with a connecting ring.
The method of claim 9,
Said linking ring is located at a corner of said first to third buoyancy blocks.
The method of claim 8,
And the pair of connecting belts are arranged in pairs, and the pair of connecting belts are arranged to intersect.
The method of claim 11,
The sloshing suppression apparatus in which the cover member is provided in the upper part of the pair of connection belts which the said pair of connection belts cross | intersect.
The method of claim 8,
The connecting belt is installed in the upper and lower surfaces of the first to third buoyancy blocks, sloshing suppression device.

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